Global　dynamics　of　supercritical　pipes　conveying　pulsating　fluid　considering　superharmonic　resonance　of　the　second　mode　with　1:　2　internal　resonance　are　investigated.　The　governing　partial　differential　equations　in　the　supercritical　regime　are　obtained　based　on　the　nontrivial　equilibrium　configuration　of　the　pipes　conveying　fluid　and　then　transformed　into　a　discretized　nonlinear　gyroscopic　system　via　assumed　modes　and　Galerkin＇s　method.　The　method　of　multiple　scales　and　canonical　transformation　are　applied　to　reduce　the　equations　of　motion　to　the　near-integrable　Hamiltonian　standard　form.　The　energy-phase　method　is　employed　to　demonstrate　the　existence　of　chaotic　dynamics　by　identifying　the　existence　of　multi-pulse　jumping　orbits　in　the　perturbed　phase　space.　The　global　solutions　are　subsequently　interpreted　in　terms　of　the　physical　motion　of　such　gyroscopic　system.　Two　types　of　nonlinear　normal　modal　motion　and　the　chaotic　pattern　conversion　between　the　locked　simple　bidirectional　traveling　wave　motion　and　the　complex　bidirectional　traveling　wave　motion　are　discussed.